package com.facexue.miniprogram.utils;

import com.alibaba.fastjson2.JSON;
//import com.alibaba.fastjson.parser.ParserConfig;
//import com.alibaba.fastjson.serializer.SerializerFeature;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.type.TypeFactory;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.SerializationException;
import org.springframework.util.Assert;

import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;

/**
* Redis使用FastJson序列化
*
* @author QiaoChu
*/
public class FastJson2JsonRedisSerializer<T> implements RedisSerializer<T> {
  @SuppressWarnings("unused")
  private ObjectMapper objectMapper = new ObjectMapper();

  public static final Charset DEFAULT_CHARSET = StandardCharsets.UTF_8;

  private Class<T> clazz;

  static {
      //ParserConfig.getGlobalInstance().setAutoTypeSupport(true);
  }

  public FastJson2JsonRedisSerializer(Class<T> clazz) {
      super();
      this.clazz = clazz;
  }

  @Override
  public byte[] serialize(T t) throws SerializationException {
      if (t == null) {
          return new byte[0];
      }
      //return JSON.toJSONString(t, SerializerFeature.WriteClassName).getBytes(DEFAULT_CHARSET);
      return JSON.toJSONBytes(t);
  }

  @Override
  public T deserialize(byte[] bytes) throws SerializationException {
      if (bytes == null || bytes.length <= 0) {
          return null;
      }
      String str = new String(bytes, DEFAULT_CHARSET);

      return JSON.parseObject(str, clazz);
  }

  public void setObjectMapper(ObjectMapper objectMapper) {
      Assert.notNull(objectMapper, "'objectMapper' must not be null");
      this.objectMapper = objectMapper;
  }

  protected JavaType getJavaType(Class<?> clazz) {
      return TypeFactory.defaultInstance().constructType(clazz);
  }
}